source: doc/aubioonset.sgml @ 06156a6

<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [

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  <!-- Fill in your name for FIRSTNAME and SURNAME. -->
  <!ENTITY dhfirstname "<firstname>Paul</firstname>">
  <!ENTITY dhsurname   "<surname>Brossier</surname>">
  <!-- Please adjust the date whenever revising the manpage. -->
  <!ENTITY dhdate      "<date>December 1, 2004</date>">
  <!-- SECTION should be 1-8, maybe w/ subsection other parameters are
       allowed: see man(7), man(1). -->
  <!ENTITY dhsection   "<manvolnum>1</manvolnum>">
  <!ENTITY dhemail     "<email>piem@altern.org</email>">
  <!ENTITY dhusername  "Paul Brossier">
  <!ENTITY dhucpackage "<refentrytitle>AUBIOONSET</refentrytitle>">
  <!ENTITY dhpackage   "aubioonset">

  <!ENTITY debian      "<productname>Debian</productname>">
  <!ENTITY gnu         "<acronym>GNU</acronym>">
  <!ENTITY gpl         "&gnu; <acronym>GPL</acronym>">
]>

<refentry>
  <refentryinfo>
    <address>
      &dhemail;
    </address>
    <author>
      &dhfirstname;
      &dhsurname;
    </author>
    <copyright>
      <year>2003</year>
      <holder>&dhusername;</holder>
    </copyright>
    &dhdate;
  </refentryinfo>
  <refmeta>
    &dhucpackage;

    &dhsection;
  </refmeta>
  <refnamediv>
    <refname>&dhpackage;</refname>

    <refpurpose>a command line tool for real time onset extraction</refpurpose>

  </refnamediv>
  <refsynopsisdiv>
    <cmdsynopsis>
      <command>&dhpackage;</command>
    </cmdsynopsis>
  </refsynopsisdiv>
  <refsect1>
    <title>DESCRIPTION</title>

    <para>This manual page documents briefly the <command>&dhpackage;</command> command.</para>

<para>The library <emphasis>aubio</emphasis> provides a small set of functions
to extract events and objects from audio, from live streams or still files.
Onsets are used to label the beginning of notes, pitches to label their
height.</para>

<para><command>aubionotes</command> is still in an experimental state. Its aim
is to segment notes with onsets, and label them with their detected pitch. When
started without an input file argument (<option>-i</option>), aubionotes
creates a jack input and a midi output. When an input file is given, it outputs
the results on the console.</para>

  </refsect1>
  <refsect1>
    <title>OPTIONS</title>

<para>This program follows the usual GNU command line syntax, with long options
starting with two dashes (`-').  A summary of options is included below.</para>

<variablelist>
  <varlistentry>
  <term><option>-i</option>
  <option>--input filein</option></term>
  <listitem>
<para>Run analysis on this audio file. Most common (uncompressed) formats are 
supported.</para>
  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-o</option>
  <option>--output fileout</option></term>
  <listitem>

  <para>Save results in this file. The file will be created on the model of the
  input file. Results are marked by a very short wood-block sample.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-O</option>
  <option>--onset mode</option></term>
  <listitem>

  <para>The onset detection function to run. Available functions are
  <emphasis>complexdomain</emphasis>, <emphasis>hfc</emphasis>,
  <emphasis>phase</emphasis>, <emphasis>specdiff</emphasis>,
  <emphasis>energy</emphasis>, <emphasis>kl</emphasis> and
  <emphasis>mkl</emphasis>. By default, both Kullback Liebler (kl) and complex
  domain are used in parallel.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-t</option>
  <option>--threshold value</option></term>
  <listitem>

  <para>Set the threshold value for the onset peak picking. Typical values are
  within <literal>0.001</literal> and <literal>0.900</literal>. Default is
  <literal>0.1</literal>. The <emphasis>lower</emphasis> the <emphasis>more
  sensible</emphasis>.  Try <literal>0.3</literal> in case of
  over-detections.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-j</option>
  <option>--jack</option></term>
  <listitem>
<para>Run in jack mode (default when started without input file) and creates a midi output.</para>
  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-h</option>
  <option>--help</option></term>
  <listitem>
<para>Show summary of options.</para>
  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-v</option>
  <option>--verbose</option></term>
  <listitem>
<para>Show results on the console.</para>

  </listitem>
  </varlistentry>
</variablelist>

  </refsect1>
  <refsect1>
    <title>SEE ALSO</title>

    <para><command>aubionotes</command> (1)</para>

  </refsect1>

<refsect1>
<title>BUGS</title>

<para>For now the program has been only tested on audio signals sampled at 44.1
kHz.</para>

</refsect1>

  <refsect1>
    <title>AUTHOR</title>

    <para>This manual page was written by &dhusername; (&dhemail;). Permission
    is granted to copy, distribute and/or modify this document under the terms
    of the &gnu; General Public License, Version 2 any later version published
    by the Free Software Foundation.</para>

    <para>On Debian systems, the complete text of the GNU General Public
    License can be found in /usr/share/common-licenses/GPL.</para>

  </refsect1>
</refentry>

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